TITLE

Step instability and island formation during annealing of pseudomorphic InGaAs/GaAs layers

AUTHOR(S)
Riposan, A.; Martin, G. K. M.; Millunchick, J. Mirecki
PUB. DATE
December 2003
SOURCE
Applied Physics Letters;12/1/2003, Vol. 83 Issue 22, p4518
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The morphological stability of compressively strained In[sub 0.27]Ga[sub 0.73]As/GaAs pseudomorphic layers has been investigated during annealing. Large three-dimensional islands form at the beginning of annealing on initially flat surfaces, likely to relieve strain energy. The islands disappear with increasing annealing, being reabsorbed into the terraces. At the same time, the step line destabilizes forming cusps that inject two-dimensional vacancy islands into the terrace. At high temperatures, this process leads to a severe deterioration of the morphology that is not due to decomposition. The island dissolution and the development of the step instability are likely alternative paths towards the reduction of surface energy. © 2003 American Institute of Physics.
ACCESSION #
11503326

 

Related Articles

  • Characterization of pseudomorphic InGaAs channel modulation-doped field-effect-transistor structures grown by molecular-beam epitaxy. Kopf, R. F.; Kuo, J. M.; Kovalchick, J.; Pearton, S. J.; Jones, E. D.; Ourmazd, A. // Journal of Applied Physics;10/15/1990, Vol. 68 Issue 8, p4029 

    Presents a study which compared Hall-effect measurements combined with annealing and photoluminescence as characterization techniques for the optimization of the growth of pseudomorphic InGaAS channel modulation-doped field-effect-transistor structures. Growth of the epitaxial layers; Results...

  • The Effect of Lamellar Morphology on Tensile and High-Cycle Fatigue Behavior of Orthorhombic Ti-22Al-27Nb Alloy. Hagiwara, Masuo; Araoka, Aya; Seung Jin Yang; Emura, Satoshi; Soo Woo Nam // Metallurgical & Materials Transactions. Part A;Jul2004, Vol. 35 Issue 7, p2161 

    The room-temperature tensile and high-cycle fatigue (HCF) behavior of orthorhombic Ti-22A|-27Nb alloy with varying lamellar morphology was investigated. Varying lamellar morphology was produced by changing the cooling rate after annealing in the single B2 phase region. A slower cooling rate of...

  • Morphology and Rheology of Cocontinuous Blends. Barron, Carlos R. Lopez; Macosko, Christopher W. // AIP Conference Proceedings;7/7/2008, Vol. 1027 Issue 1, p523 

    The time evolution of the elastic modulus and the geometrical parameters of interfaces in a 50/50 PS/SAN cocontinuous blend are analyzed during annealing. The interfaces were tracked via LSCM (laser scanning confocal microscopy) coupled with 3D-image analysis. The evolution of G′ and the...

  • The thermal effect on magnetic properties of iron-containing coatings formed on titanium by plasma-electrolytic oxidation. Rudnev, V.; Adigamova, M.; Lukiyanchuk, I.; Ustinov, A.; Tkachenko, I.; Kharitonskii, P.; Frolov, A.; Morozova, V. // Protection of Metals & Physical Chemistry of Surfaces;Nov2012, Vol. 48 Issue 6, p671 

    The effect of annealing in air at T temperature up to 800°C on the magnetic characteristics, elemental and phase composition, and surface morphology of iron-containing oxide coatings on titanium is studied. Annealing at T ≤ 500°C does not seem to affect the composition and morphology...

  • A Surface Morphology Study On The Effect Of Annealing Temperature To Nanostructured ZnO And Its Reaction Mechanism In Solution Method. Khusaimi, Z.; Amizam, S.; Rafaie, H. A.; Mamat, M. H.; Abdullah, N.; Rusop, M. // AIP Conference Proceedings;6/1/2009, Vol. 1136 Issue 1, p790 

    Nanocrystalline zinc oxide (ZnO) were grown on silicon (Si) substrates by sol-gel spin coating, without the presence of metal catalyst. In the process, annealing temperatures were varied from 350–500° C and it was found that increasing the annealing temperature had improved the...

  • Dewetting of Au and AuPt alloy films: A dewetting zone model. Manuela Müller, Claudia; Spolenak, Ralph // Journal of Applied Physics;Mar2013, Vol. 113 Issue 9, p094301 

    When thin metal films are annealed they can degrade into particles. This happens even at annealing temperatures below the melting point and is known as solid-state dewetting or agglomeration. The solid-state dewetting behaviour of 15-35 nm thick Au and 20 nm thick AuPt films on SiNx/SiO2/Si...

  • Effect of postgrowth annealing on the morphology and magnetic properties of MnAs thin films grown on GaAs(001) substrates. Nakane, R.; Sugahara, S.; Tanaka, M. // Journal of Applied Physics;6/1/2004, Vol. 95 Issue 11, p6558 

    We have investigated the effect of postgrowth annealing on the surface morphology and magnetic properties of monocrystalline MnAs thin films epitaxially grown on GaAs(001) substrates by molecular beam epitaxy. After the growth of MnAs, the postgrowth annealing was carried out in the temperature...

  • Evolution of ZnO Nanoflower-like Structure Formation and Growth during Synthesis and Paste Preparation. Iqbal, Muhammad; Mahendra, Robert; Wahyuono, Ruri Agung; Sawitri, Dyah; Risanti, Doty Dewi // Advanced Materials Research;2015, Vol. 1123, p219 

    ZnO nanoflowers were synthesized by co-precipitation method at low temperature (80°C) for dye-sensitized solar cell applications. ZnO nanostructures were grown at various pH values from Zinc nitrate tetrahydrate [Zn(NO3)2.4H2O], HMTA (Hexamethylenetetramine) and Potassium Hydroxide (KOH). The...

  • Minerals in disguise. Scovil, Jeff // Earth;Oct97, Vol. 6 Issue 5, p75 

    Focuses on pseudomorphs, mineralogical imposters. How minerals evolve; Most common pseudomorphs; Why petrified wood is considered pseudomorph.

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics